io.ebeaninternal.server.persist.dml.GenerateDmlRequest Maven / Gradle / Ivy
package io.ebeaninternal.server.persist.dml;
/**
* Helper to support the generation of DML statements.
*/
public class GenerateDmlRequest {
private static final String IS_NULL = " is null";
private final StringBuilder sb = new StringBuilder(100);
private StringBuilder insertBindBuffer;
private String prefix;
private String prefix2;
private int insertMode;
private int bindColumnCount;
/**
* Create from a PersistRequestBean.
*/
public GenerateDmlRequest() {
}
public GenerateDmlRequest append(String s) {
sb.append(s);
return this;
}
public void appendColumnIsNull(String column) {
appendColumn(column, IS_NULL);
}
public void appendColumn(String column) {
//String bind = (insertMode > 0) ? "?" : "=?";
appendColumn(column, "?");
}
public void appendColumn(String column, String bind) {
++bindColumnCount;
sb.append(prefix);
sb.append(column);
//sb.append(expr);
if (insertMode > 0) {
if (insertMode++ > 1) {
insertBindBuffer.append(",");
}
insertBindBuffer.append(bind);
} else {
sb.append("=");
sb.append(bind);
}
if (prefix2 != null) {
prefix = prefix2;
prefix2 = null;
}
}
public int getBindColumnCount() {
return bindColumnCount;
}
public String getInsertBindBuffer() {
return insertBindBuffer.toString();
}
@Override
public String toString() {
return sb.toString();
}
public void setWhereIdMode() {
this.prefix = "";
this.prefix2 = " and ";
}
public void setInsertSetMode() {
this.insertBindBuffer = new StringBuilder(100);
this.insertMode = 1;
this.prefix = "";
this.prefix2 = ", ";
}
public void setUpdateSetMode() {
this.prefix = "";
this.prefix2 = ", ";
}
}