📄 defaultkeyedvalues2d.html
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<FONT color="green">184</FONT> return Collections.unmodifiableList(this.rowKeys);<a name="line.184"></a><FONT color="green">185</FONT> }<a name="line.185"></a><FONT color="green">186</FONT> <a name="line.186"></a><FONT color="green">187</FONT> /**<a name="line.187"></a><FONT color="green">188</FONT> * Returns the key for a given column.<a name="line.188"></a><FONT color="green">189</FONT> *<a name="line.189"></a><FONT color="green">190</FONT> * @param column the column.<a name="line.190"></a><FONT color="green">191</FONT> *<a name="line.191"></a><FONT color="green">192</FONT> * @return The key.<a name="line.192"></a><FONT color="green">193</FONT> */<a name="line.193"></a><FONT color="green">194</FONT> public Comparable getColumnKey(int column) {<a name="line.194"></a><FONT color="green">195</FONT> return (Comparable) this.columnKeys.get(column);<a name="line.195"></a><FONT color="green">196</FONT> }<a name="line.196"></a><FONT color="green">197</FONT> <a name="line.197"></a><FONT color="green">198</FONT> /**<a name="line.198"></a><FONT color="green">199</FONT> * Returns the column index for a given key.<a name="line.199"></a><FONT color="green">200</FONT> *<a name="line.200"></a><FONT color="green">201</FONT> * @param key the key (<code>null</code> not permitted).<a name="line.201"></a><FONT color="green">202</FONT> *<a name="line.202"></a><FONT color="green">203</FONT> * @return The column index.<a name="line.203"></a><FONT color="green">204</FONT> */<a name="line.204"></a><FONT color="green">205</FONT> public int getColumnIndex(Comparable key) {<a name="line.205"></a><FONT color="green">206</FONT> if (key == null) {<a name="line.206"></a><FONT color="green">207</FONT> throw new IllegalArgumentException("Null 'key' argument.");<a name="line.207"></a><FONT color="green">208</FONT> }<a name="line.208"></a><FONT color="green">209</FONT> return this.columnKeys.indexOf(key);<a name="line.209"></a><FONT color="green">210</FONT> }<a name="line.210"></a><FONT color="green">211</FONT> <a name="line.211"></a><FONT color="green">212</FONT> /**<a name="line.212"></a><FONT color="green">213</FONT> * Returns the column keys.<a name="line.213"></a><FONT color="green">214</FONT> *<a name="line.214"></a><FONT color="green">215</FONT> * @return The column keys.<a name="line.215"></a><FONT color="green">216</FONT> */<a name="line.216"></a><FONT color="green">217</FONT> public List getColumnKeys() {<a name="line.217"></a><FONT color="green">218</FONT> return Collections.unmodifiableList(this.columnKeys);<a name="line.218"></a><FONT color="green">219</FONT> }<a name="line.219"></a><FONT color="green">220</FONT> <a name="line.220"></a><FONT color="green">221</FONT> /**<a name="line.221"></a><FONT color="green">222</FONT> * Returns the value for the given row and column keys. This method will<a name="line.222"></a><FONT color="green">223</FONT> * throw an {@link UnknownKeyException} if either key is not defined in the<a name="line.223"></a><FONT color="green">224</FONT> * data structure.<a name="line.224"></a><FONT color="green">225</FONT> *<a name="line.225"></a><FONT color="green">226</FONT> * @param rowKey the row key (<code>null</code> not permitted).<a name="line.226"></a><FONT color="green">227</FONT> * @param columnKey the column key (<code>null</code> not permitted).<a name="line.227"></a><FONT color="green">228</FONT> *<a name="line.228"></a><FONT color="green">229</FONT> * @return The value (possibly <code>null</code>).<a name="line.229"></a><FONT color="green">230</FONT> */<a name="line.230"></a><FONT color="green">231</FONT> public Number getValue(Comparable rowKey, Comparable columnKey) {<a name="line.231"></a><FONT color="green">232</FONT> if (rowKey == null) {<a name="line.232"></a><FONT color="green">233</FONT> throw new IllegalArgumentException("Null 'rowKey' argument.");<a name="line.233"></a><FONT color="green">234</FONT> }<a name="line.234"></a><FONT color="green">235</FONT> if (columnKey == null) {<a name="line.235"></a><FONT color="green">236</FONT> throw new IllegalArgumentException("Null 'columnKey' argument.");<a name="line.236"></a><FONT color="green">237</FONT> }<a name="line.237"></a><FONT color="green">238</FONT> int row = getRowIndex(rowKey);<a name="line.238"></a><FONT color="green">239</FONT> if (row >= 0) {<a name="line.239"></a><FONT color="green">240</FONT> DefaultKeyedValues rowData <a name="line.240"></a><FONT color="green">241</FONT> = (DefaultKeyedValues) this.rows.get(row);<a name="line.241"></a><FONT color="green">242</FONT> return rowData.getValue(columnKey);<a name="line.242"></a><FONT color="green">243</FONT> }<a name="line.243"></a><FONT color="green">244</FONT> else {<a name="line.244"></a><FONT color="green">245</FONT> throw new UnknownKeyException("Unrecognised rowKey: " + rowKey);<a name="line.245"></a><FONT color="green">246</FONT> }<a name="line.246"></a><FONT color="green">247</FONT> }<a name="line.247"></a><FONT color="green">248</FONT> <a name="line.248"></a><FONT color="green">249</FONT> /**<a name="line.249"></a><FONT color="green">250</FONT> * Adds a value to the table. Performs the same function as <a name="line.250"></a><FONT color="green">251</FONT> * #setValue(Number, Comparable, Comparable).<a name="line.251"></a><FONT color="green">252</FONT> *<a name="line.252"></a><FONT color="green">253</FONT> * @param value the value (<code>null</code> permitted).<a name="line.253"></a><FONT color="green">254</FONT> * @param rowKey the row key (<code>null</code> not permitted).<a name="line.254"></a><FONT color="green">255</FONT> * @param columnKey the column key (<code>null</code> not permitted).<a name="line.255"></a><FONT color="green">256</FONT> */<a name="line.256"></a><FONT color="green">257</FONT> public void addValue(Number value, Comparable rowKey, <a name="line.257"></a><FONT color="green">258</FONT> Comparable columnKey) {<a name="line.258"></a><FONT color="green">259</FONT> // defer argument checking<a name="line.259"></a><FONT color="green">260</FONT> setValue(value, rowKey, columnKey);<a name="line.260"></a><FONT color="green">261</FONT> }<a name="line.261"></a><FONT color="green">262</FONT> <a name="line.262"></a><FONT color="green">263</FONT> /**<a name="line.263"></a><FONT color="green">264</FONT> * Adds or updates a value.<a name="line.264"></a><FONT color="green">265</FONT> *<a name="line.265"></a><FONT color="green">266</FONT> * @param value the value (<code>null</code> permitted).<a name="line.266"></a><FONT color="green">267</FONT> * @param rowKey the row key (<code>null</code> not permitted).<a name="line.267"></a><FONT color="green">268</FONT> * @param columnKey the column key (<code>null</code> not permitted).<a name="line.268"></a><FONT color="green">269</FONT> */<a name="line.269"></a><FONT color="green">270</FONT> public void setValue(Number value, Comparable rowKey, <a name="line.270"></a><FONT color="green">271</FONT> Comparable columnKey) {<a name="line.271"></a><FONT color="green">272</FONT> <a name="line.272"></a><FONT color="green">273</FONT> DefaultKeyedValues row;<a name="line.273"></a><FONT color="green">274</FONT> int rowIndex = getRowIndex(rowKey);<a name="line.274"></a><FONT color="green">275</FONT> <a name="line.275"></a><FONT color="green">276</FONT> if (rowIndex >= 0) {<a name="line.276"></a><FONT color="green">277</FONT> row = (DefaultKeyedValues) this.rows.get(rowIndex);<a name="line.277"></a><FONT color="green">278</FONT> }<a name="line.278"></a><FONT color="green">279</FONT> else {<a name="line.279"></a><FONT color="green">280</FONT> row = new DefaultKeyedValues();<a name="line.280"></a><FONT color="green">281</FONT> if (this.sortRowKeys) {<a name="line.281"></a><FONT color="green">282</FONT> rowIndex = -rowIndex - 1;<a name="line.282"></a><FONT color="green">283</FONT> this.rowKeys.add(rowIndex, rowKey);<a name="line.283"></a><FONT color="green">284</FONT> this.rows.add(rowIndex, row);<a name="line.284"></a><FONT color="green">285</FONT> }<a name="line.285"></a><FONT color="green">286</FONT> else {<a name="line.286"></a><FONT color="green">287</FONT> this.rowKeys.add(rowKey);<a name="line.287"></a><FONT color="green">288</FONT> this.rows.add(row);<a name="line.288"></a><FONT color="green">289</FONT> }<a name="line.289"></a><FONT color="green">290</FONT> }<a name="line.290"></a><FONT color="green">291</FONT> row.setValue(columnKey, value);<a name="line.291"></a><FONT color="green">292</FONT> <a name="line.292"></a><FONT color="green">293</FONT> int columnIndex = this.columnKeys.indexOf(columnKey);<a name="line.293"></a><FONT color="green">294</FONT> if (columnIndex < 0) {<a name="line.294"></a><FONT color="green">295</FONT> this.columnKeys.add(columnKey);<a name="line.295"></a><FONT color="green">296</FONT> }<a name="line.296"></a><FONT color="green">297</FONT> }<a name="line.297"></a><FONT color="green">298</FONT> <a name="line.298"></a><FONT color="green">299</FONT> /**<a name="line.299"></a><FONT color="green">300</FONT> * Removes a value.<a name="line.300"></a><FONT color="green">301</FONT> *<a name="line.301"></a><FONT color="green">302</FONT> * @param rowKey the row key (<code>null</code> not permitted).<a name="line.302"></a><FONT color="green">303</FONT> * @param columnKey the column key (<code>null</code> not permitted).<a name="line.303"></a><FONT color="green">304</FONT> */<a name="line.304"></a><FONT color="green">305</FONT> public void removeValue(Comparable rowKey, Comparable columnKey) {<a name="line.305"></a><FONT color="green">306</FONT> setValue(null, rowKey, columnKey);<a name="line.306"></a><FONT color="green">307</FONT> <a name="line.307"></a><FONT color="green">308</FONT> // 1. check whether the row is now empty.<a name="line.308"></a><FONT color="green">309</FONT> boolean allNull = true;<a name="line.309"></a><FONT color="green">310</FONT> int rowIndex = getRowIndex(rowKey);<a name="line.310"></a><FONT color="green">311</FONT> DefaultKeyedValues row = (DefaultKeyedValues) this.rows.get(rowIndex);<a name="line.311"></a><FONT color="green">312</FONT> <a name="line.312"></a><FONT color="green">313</FONT> for (int item = 0, itemCount = row.getItemCount(); item < itemCount; <a name="line.313"></a><FONT color="green">314</FONT> item++) {<a name="line.314"></a><FONT color="green">315</FONT> if (row.getValue(item) != null) {<a name="line.315"></a><FONT color="green">316</FONT> allNull = false;<a name="line.316"></a><FONT color="green">317</FONT> break;<a name="line.317"></a><FONT color="green">318</FONT> }<a name="line.318"></a><FONT color="green">319</FONT> }<a name="line.319"></a><FONT color="green">320</FONT> <a name="line.320"></a><FONT color="green">321</FONT> if (allNull) {<a name="line.321"></a><FONT color="green">322</FONT> this.rowKeys.remove(rowIndex);<a name="line.322"></a><FONT color="green">323</FONT> this.rows.remove(rowIndex);<a name="line.323"></a><FONT color="green">324</FONT> }<a name="line.324"></a><FONT color="green">325</FONT> <a name="line.325"></a><FONT color="green">326</FONT> // 2. check whether the column is now empty.<a name="line.326"></a><FONT color="green">327</FONT> allNull = true;<a name="line.327"></a><FONT color="green">328</FONT> int columnIndex = getColumnIndex(columnKey);<a name="line.328"></a><FONT color="green">329</FONT> <a name="line.329"></a><FONT color="green">330</FONT> for (int item = 0, itemCount = this.rows.size(); item < itemCount; <a name="line.330"></a><FONT color="green">331</FONT> item++) {<a name="line.331"></a><FONT color="green">332</FONT> row = (DefaultKeyedValues) this.rows.get(item);<a name="line.332"></a><FONT color="green">333</FONT> if (row.getValue(columnIndex) != null) {<a name="line.333"></a><FONT color="green">334</FONT> allNull = false;<a name="line.334"></a><FONT color="green">335</FONT> break;<a name="line.335"></a><FONT color="green">336</FONT> }<a name="line.336"></a><FONT color="green">337</FONT> }<a name="line.337"></a><FONT color="green">338</FONT> <a name="line.338"></a><FONT color="green">339</FONT> if (allNull) {<a name="line.339"></a><FONT color="green">340</FONT> for (int item = 0, itemCount = this.rows.size(); item < itemCount; <a name="line.340"></a><FONT color="green">341</FONT> item++) {<a name="line.341"></a><FONT color="green">342</FONT> row = (DefaultKeyedValues) this.rows.get(item);<a name="line.342"></a><FONT color="green">343</FONT> row.removeValue(columnIndex);<a name="line.343"></a><FONT color="green">344</FONT> }<a name="line.344"></a><FONT color="green">345</FONT> this.columnKeys.remove(columnIndex);<a name="line.345"></a><FONT color="green">346</FONT> }<a name="line.346"></a><FONT color="green">347</FONT> }<a name="line.347"></a><FONT color="green">348</FONT> <a name="line.348"></a><FONT color="green">349</FONT> /**<a name="line.349"></a><FONT color="green">350</FONT> * Removes a row.<a name="line.350"></a><FONT color="green">351</FONT> *<a name="line.351"></a><FONT color="green">352</FONT> * @param rowIndex the row index.<a name="line.352"></a><FONT color="green">353</FONT> */<a name="line.353"></a><FONT color="green">354</FONT> public void removeRow(int rowIndex) {<a name="line.354"></a><FONT color="green">355</FONT> this.rowKeys.remove(rowIndex);<a name="line.355"></a><FONT color="green">356</FONT> this.rows.remove(rowIndex);<a name="line.356"></a><FONT color="green">357</FONT> }<a name="line.357"></a><FONT color="green">358</FONT> <a name="line.358"></a><FONT color="green">359</FONT> /**<a name="line.359"></a><FONT color="green">360</FONT> * Removes a row.<a name="line.360"></a><FONT color="green">361</FONT> *<a name="line.361"></a><FONT color="green">362</FONT> * @param rowKey the row key.<a name="line.362"></a><FONT color="green">363</FONT> */<a name="line.363"></a><FONT color="green">364</FONT> public void removeRow(Comparable rowKey) {<a name="line.364"></a><FONT color="green">365</FONT> removeRow(getRowIndex(rowKey));<a name="line.365"></a><FONT color="green">366</FONT> }<a name="line.366"></a><FONT color="green">367</FONT> <a name="line.367"></a><FONT color="green">368</FONT> /**<a name="line.368"></a><FONT color="green">369</FONT> * Removes a column.<a name="line.369"></a>⌨️ 快捷键说明
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